ASTROSAT CZTI

Data Quality Report

Orbit 21618

Creation date: 2024-06-27T18:30:16.227665
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_094T01_9000003204_21618cztM0_level2.evt modeM0/AS1A05_094T01_9000003204_21618cztM0_level2_quad_clean.evt
Size (bytes)652,345,920106,600,320
Size622.1 MB 101.7 MB
Events in quadrant A4,593,430651,239
Events in quadrant B4,630,175655,252
Events in quadrant C4,620,930637,618
Events in quadrant D5,266,650624,188

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198142
B0197262
C0198562
D0220472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9515750.788229%
B9515790.830268%
C95151451.523910%
D95151992.091435%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 9985 9516 0 0 0.00% 0.00%
B 9985 9516 2 2 0.02% 0.02%
C 9985 9516 17 17 0.17% 0.18%
D 9985 9516 105 105 1.05% 1.10%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 236 212332 920.27 1136 1111 229.5
A 13 254 12115 47.94 1136 1111 229.5
A 3 137 9757 37.67 1136 1111 229.5
B 0 190 51864 233.61 1130 1100 217.3
B 3 64 36467 162.76 1130 1100 217.3
B 0 219 29519 130.78 1130 1100 217.3
C 9 54 192537 746.34 1091 1098 256.5
C 14 238 170277 659.56 1091 1098 256.5
C 13 61 7518 25.03 1091 1098 256.5
D 1 52 354795 1321.44 1101 1071 267.7
D 7 38 301672 1122.99 1101 1071 267.7
D 2 136 160056 593.94 1101 1071 267.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter